عنوان مقاله [English]
In order to investigate the effect of codacide adjuvant on the efficacy of clodinafop propargyl and tribenuron methyl, a field experiment was carried out on wheat at the Iranian Research Institute of Plant Protection in Alborz province during 2013-2014 growing season. Treatments included tribenuron methyl at three doses (10.5, 12.75 and 15 g a.i. ha-1), tribenuron methyl at three doses (10.5, 12.75 and 15 g a.i. ha-1) + 0.25% V/V codacide, clodinafop propargyl at three doses (0.048, 0.064 and 0.08 L a.i. ha-1), clodinafop propargyl at three doses (0.048, 0.064 and 0.08 L a.i. ha-1) + 0.25% V/V codacide, and weed-free control. Herbicides were sprayed at tillering stage of wheat. Results showed that clodinafop propargyl at 0.08 L a.i. ha-1 performed better regarding grass weed control and application of codacide adjuvant with this herbicide increased its efficacy. Application of tribenuron methyl (12.75 g a.i. ha-1) + codacide resulted in highest reductions in broad-leaved weed density and dry matter (95% and 93%, respectively), which was not significantly different with weed-free control. Wheat biological yield (3275 kg ha-1), grain yield (2200 kg ha-1) and the number of fertile spikelets/spike (6.26) were 22, 40 and 13% higher than the weed-infested control, respectively. The lowest yield among herbicide treatments belonged to tribenuron methyl (10.5 g a.i. ha-1) with harvest index of 34.04% and 36.50 fertile spikelets/spike.
Anonymous, 2015. Codacide making everydrop count. http://www.microcide.co.uk/
Asif Shehzad, M., Ather Nadeem, M., Iqba, M. 2012. Weed control and yield attributes against postemergence herbicides application in wheat crop,Punjab, Pakistan. Global Advance Research Journal of Agricultural Science 1: 007 016.
Baghestani, M. A, E. Zand, S. Soufizadeh, M. Mirvakili and N. Jaafarzadeh. 2009. Antagonistic effect of 2,4-D plus MCPA and clodinafop propargyl on wheat field weeds in Iran. Appl. Ent. Phytophath. Special Issue1-16
Cousens, R. 1988. An empirical model relating crop yield to weed and crop density and a statistical comparison with other models. J. Agric. Sci. 105:513–521.
FAO, 2014. FAOSTAT. WWW.FAO.org. Coro/Statistics/en/.
Grichar, W.J. 2006. Weed control and grain sorghum tolerance to flumioxazin. Crop Prot. 25: 174–177.
Koocheki, A.R., and Alizadeh, A. 2004. Principles of Agriculture in Dry Areas. Astan Quds Razavi Press. Mashhad. Pp 457.
Kudsk, P. 2008. Optimising herbicide dose: a straightforward approach to reduce the risk of side effects of herbicides. Environmentalist. 28: 49-55.
Montazeri, M., Zand, E. and Baghestani, M.A., 2005. Weeds and their control in wheat fields of Iran, first ed. Agricultural Research and Education Organization Press, Tehran.
Mousavinik, A., Zand. E.,Baghestani, M.A., Deihimfard. R., Soufizadeh. S., Ghezeli. F., and Aliverdi. A. 2009. Ability of Adjuvants in enhancing the performance of pinoxaden and clodinafop propargyl herbicides against grass weeds. Iranian J. Weed Sci. 5: 65-77.
Nourzadeh, Sh., Abbaspour. M. and Baghestani, M.A. 2007. Evaluation of efficacy several new grasses herbicides in wheat fields in Khorasan Razavi. 2nd Iranian Weed Science Congress, Mashhad. Pp 484-491.
Soufizadeh, S. and Zand, E., 2004. Influence of weed interference on wheat (Triticum aestivum L.) yield, nitrogen use efficiency and grain protein content. In: Proceedings Fourth International Weed Science Congress. Durban, South Africa, 98 pp.
Olesen, J.E., Hansen, P.K., Berntsen, J., Christensen, S., 2004. Simulation of above-ground suppression of competing species and competition tolerance in winter wheat varieties. Field Crops Res. 89: 263–280.
SAS Institute, 2000. The SAS System for Windows, Release 8.0. StatisticalAnalysis Systems Institute, Carry, NC.
Zamiri, K. 2016. Investigation of the possibility of reducing the use of herbicides in corn using Codacide oil. Master's thesis, Islamic Azad University, Science and Research Branch.
Zeidali, E. R., Naseri . A., Mirzaei and A. A. Chitband. 2017. The eeficay of ecophysiological characteristics of wheat affected by the density and application of herbicides. Scientific Journal of Ecophysiology of Crops 10(4): 839-856.
Zimdahl, R.L. 2004. Weed-crop competition. A review. Second edition. Blackwell publishing. Pp 211.